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Cobra Forums
The Terminator
Engine/Tuning
Yet another spark plug question
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<blockquote data-quote="2814v" data-source="post: 2343178" data-attributes="member: 14928"><p>I read on this forum a while back that the motorcraft 22FMI spark plugs are the same heat range as NGK TR6's is this true?</p><p>Started pulling my plugs to due the swap and saw I have 22FM1 from the factory.</p><p>One more question, why are the TR6's so hard to get started? I am talking about the intial hand thread into the head.</p></blockquote><p></p>
[QUOTE="2814v, post: 2343178, member: 14928"] I read on this forum a while back that the motorcraft 22FMI spark plugs are the same heat range as NGK TR6's is this true? Started pulling my plugs to due the swap and saw I have 22FM1 from the factory. One more question, why are the TR6's so hard to get started? I am talking about the intial hand thread into the head. [/QUOTE]
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Yet another spark plug question
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